When many guys hide in a closet when one of their friends is boning a chick. The guys in the closet are jacking off and right as they are about to jizz they all pop out of the closet at the same time and drench the female in their semen. Professionals will try to aim for the female's eye.

Yo, me and my friends Kansas City Car Washed that chick that Victor was having sex with

A sex move; while a male and female are engaged in sexual intercourse, 5-8 other males are hiding under the bed, masturbating. At the appropriate time, the men jump out of hiding and ejaculate on the woman, washing her in semen.

-I tried to get her to do a Kansas City carwash for 50 bucks, but she wanted 75.